2505650155 has 4 divisors (see below), whose sum is σ = 3006780192. Its totient is φ = 2004520120.

The previous prime is 2505650149. The next prime is 2505650167. The reversal of 2505650155 is 5510565052.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2505650155 - 2²⁵ = 2472095723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505650155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250565011 + ... + 250565020.

It is an arithmetic number, because the mean of its divisors is an integer number (751695048).

Almost surely, 2^2505650155 is an apocalyptic number.

2505650155 is a deficient number, since it is larger than the sum of its proper divisors (501130037).

2505650155 is an equidigital number, since it uses as much as digits as its factorization.

2505650155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501130036.

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 2505650155 is about 50056.4696617730. The cubic root of 2505650155 is about 1358.2304976744.

The spelling of 2505650155 in words is "two billion, five hundred five million, six hundred fifty thousand, one hundred fifty-five".